November 11, 2025Nov 11 Hello,What is the safest way to "retire" old data disks from the array? I have 3 data disks approaching 13 years (seriously!) in service which show no significant SMART errors but are small, 2T or less. Time for them to go!I ran unbalanced to move all the files to other disks. How do I now remove these from the array and hopefully, preserve parity? I'm running 6.12.15.Thanks!
November 11, 2025Nov 11 Community Expert There are two options to shrink the array; both are described here:https://docs.unraid.net/unraid-os/using-unraid-to/manage-storage/array/removing-disks-from-array/#removing-data-disks
November 11, 2025Nov 11 Author Thanks!I've tried that but get stopped at step 5 trying to unmount disk 6. I get "umount: /mnt/disk6: no mount point specified". I'm clearly missing something but not sure what. I've erased that disk so I see it as unmountable (no file system) when the array is started, a df -h doesn't list disk 6.
November 11, 2025Nov 11 Community Expert That Unraid version won't stop the array if you unmount a disk manually; you can use this workaround:https://forums.unraid.net/topic/145821-cant-unraid-stop-when-array-already-unmounted/?do=findComment&comment=1323316
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